After analyzing the area of smoking is harmful to hygiene and smoking in public portrays a bad example. As has been proven, smoking should not be allowed in public area, because besides the two examples above, I think smoking should be banned in public places. That is because non-smokers should not be forced to secondhand smoke against their will. Even though it is an obvious etiquette not to smoke when surrounded by many people, a large number of smokers don't seem to care so much about it.